UY89
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BrandPHILIPS
ClassHigh-vacuum HALF-WAVE RECTIFIER
BaseNoval
Filament31V @ 100mA
Construction
Primary TypeHalf-wave rectifier
Rectifier TypeHalf-wave
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirect heating by A.C. or D.C.; series supply
Absolute Maximum Ratings
Plate Voltage700 V
Cathode Current100 mA
H-C Voltage550 V
Audio Performance
Key Features
- Indirectly heated
- Series supply compatible
- High-vacuum
- Monoplaque
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Rectifier operation Vtr 110V | 110V | - | - | - | 100mA |
| Rectifier operation Vtr 127V | 127V | - | - | - | 100mA |
| Rectifier operation Vtr 220V | 220V | - | - | - | 100mA |
| Rectifier operation Vtr 250V | 250V | - | - | - | 100mA |
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